US1468258A - Valve lifter - Google Patents

Description

Sept. 18, 1923.

- 1,468,258' W. C. CADDIN VAL E LIFTER Filed Nov. 26. 1921 gwuantoi Patented Sept. 18, 1923.

"WILLIAM G. CAIDDIN, or DONALSONVILLE, enonora.

VALVE nrr rnn'.

Application filed November as, 1921." Serial No. 517,871.

in the art to \vhichit appertains to make and use the same.

The invention relates to valve'lifting devices Wherebyto compress the spring when it is required to remove the valve of an internal combustion engine and has for its object to provide an appliance of the nature aforesaid which may be utilized for releasing the springs of valve cages, or for like work requiring the compressing of a spring when it is required to release the parts in cooperation therewith.

Other objects and advantages will be apparent andsuggest themselves as the nature of the inventionis understood. 7

lVhile the drawings lllI IST-IZLl'B an embodiment of the invention it is to be understood that in adapting the same to meet different conditions and requirements, various changes in the form, proportion and minor details of construction may be resorted to without de parting from the nature of the invention.

Referring to the accompanying drawings forming a part of the application,

Figure 1 is a perspective view 0' lifter embodying the invention,

Figure 2 is a top plan view, the lifting screw being in section and the dotted lines showing the pivoted nut member thrown outward for quick adjustment of said screw, and

Figure 3 is a section on the line 3-3 of Figure 2, looking in the direction of the arrows with the pivoted nut member in outward position.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The valve lifter comprises a rod or bar 1 which constitutes a standard on which blocks 2 are adjustably mounted. An arm 3'is ad justable in the upper block 2 and receives the lifting screw 4. An arm 5 is adjustable in the lower block 2 and is forked at its outer end, as indicated at 6, to re".

ceive the valve stem (not shown) and enf a valve.

gage the valve cups upon opposite sides in a manner well understood in the application of valve lifters The blocks 2 are of like formatron, each being provided with an oponing'to receive the standard 1 and the cooperating arm, said parts. being made secure in the adjusted position bymeans of .clamp screws 7 threaded into openings formed in, the blocksand having their inner ends adapted. to engage the respective parts associated" with the blocks. 7

A member 8 has pivotal'connection at its outer end withthe outer end of the upper arm 3 and'is provided .nearvits inner end with a lateral protuberance =9 of. approximately semi-circular form. A projection 10, at the inner entL of the member 8', constitutes a stop to limit the outward movement of the member in conjunction with a pivoted frame or yoke llwhich is of loop form and pivoted to the armB. A screw 12, threaded into an opening formed in the outer endof the'fra-me or yoke ll, is adapted to cooperate with the protuberance Q andihold the member 8 close against the arm; 3. An eXpansible helical spring 13 is interposed between the member 8 1 and arm '3 remove the free end of the member 8 outwardly when frame or yoke 11 is moved to the position. substantially as in cheated by dotted lines in Figure 2, whereby quick adjustment of the lifting screw 4: may

be effected. The opposing faces of sides of the member 8 and arm 8 are depressed and threaded to receive the lifting screw 4, thereby constituting a nut wherebylongitudinal movement of the lifting screw 4 is effected when the same is rotated. The part 8 conreleased and moved outward at its free end, releases the lifting screw 4 so that said screw may be adjusted quickly to the required position.

The lifting screw 4 may be of anylength and construction and its inner or lower end is pointed to engage the center opening usually provided in valves and its upper end is formed with a head 1% adapted to receive a wrench 15 or like tool whereby the stitues a pivoted nut memberfwhich, when i gine are successively removed, it is advisable 1 to provide means whereby the return or retrograde movement of the screw will be limited to that position. A nut 16 is accordingly mounted upon the screw 4 and constitutes a stop engageable with the under surface out arm 3 and member 8 whereby said screw may be quickly set when adjusted to the valve or like work. T he wrench 15 may be of the ratchet typeor of desired construction to facilitate the rotatin ot the screw 4- when required.

in the practical operation ot' the device, the arms 3 and 5 may be adjusted the required distance apart and extended laterally to suit the nature of the Work in hand, so that the fork 6 may engage the lower end of the spring and the point of the-screw a the head of the valve. hen thus adjusted, the valve spring is compressed byrotating the screw 4r whereby the retainer may be displaced to admit of the removal of the valve.

for any desired purpose. The screw 4; may he quickly returned to normal position or set by releasing the member 8 and moving the same outward, as herein indicated.

What is claimed is: r

1. In a valve litter, an aru'r. a member pivoted at one end to the arm, a yoke pivoted at one end to said arm, a screw at the opposite end of the yoke adapted to engage the free end of said pivoted member to hold it in close contact with said arm, there being a threaded opening formedpartly inthe arm and partlyin the pivoted member. and a litting screw mounted in said threaded opening.

2. In a valve litter, an arm, a member pivoted at one end to the arm and having an otfstanding protuberance at its opposite end, a yoke pivoted to the arm, a screw carried cooperative relation with said separable nut and adapted for quick adjustment, and an ad ustable stop on the lifting screw engageable with the nut adapted for fixing the position of the lifting screw when setting the same.

4. A valve lifter comprising a standard,

blocks adjustable on opposite end portions of the standard, arms laterally adjustable in the blocks, one of said arms having its outer end forked, a member pivoted at one end to the other arm and having an ofi'standing protuberance at its opposite end, a yoke pivoted to the arm, a screw carried by the yoke and adapted to engage the. protuberance of the pivoted member, there being a threaded opening formed partly in the latter arm and partlyein thepivoted member, a lifting screw mounted in said threaded opening, and a stop engageahle with the latter arm adjust,- ahle on the httmg screw.

In testimony whereof I aflix my signature in presence of two witnesses.

\VILLIAM C. QADDIN.

Witnesses J G. Gonny, Orno BENTON.

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